JP2019119485A - Discharge container with screw cap - Google Patents

Abstract

To provide a discharge container capable of inhibiting a content from spattering to the surrounding even when removing a screw cap in a state where an inner pressure remains.SOLUTION: In a discharge container 10 including a container body 11 and a valve assembly 12, a male screw 11f and an O ring holding part 11g are formed around an outer periphery of a neck part 11d in the container body 11; the valve assembly 12 includes a valve mechanism 14 and a screw cap 15 for mounting the valve mechanism 14 to the container body 10; the screw cap 15 includes a cylindrical part 15a on which a female screw 15e and a seal face 15f for pressing an O ring 13 are formed; and a shield wall 15d forming an annular space S at a lowe part of the cylindrical part 15a is provided around the neck part 11d.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a discharge container for filling a stock solution and a pressurizing agent, and more particularly to a discharge container in which a mouth of a container body is closed by a screw cap.

  Patent Document 1 discloses that, in an aerosol product in which a liquid concentrate and a pressurizing agent are filled in a container body, the mouth of the container body is closed with a screw cap (screw cap). The screw cap is fixed to the container body by screwing a female screw provided on the inner periphery with an external screw provided on the outer periphery of the neck of the container body. Also, by pressing the O-ring held on the outer periphery of the container body in the horizontal direction by the vertical inner surface (seal surface) provided below the female screw, a seal is formed between the O ring and the container body. There is. U.S. Pat. No. 5,958,015 describes the use of screw caps in dual aerosol products that are separately filled with stock solution and pressurizing agent. U.S. Pat. No. 5,958,015 describes the use of screw caps in aerosol products using a pressure replenishment mechanism.

JP, 2017-013796, A JP, 2016-33038, A International Publication No. WO 2017/061538

  By the way, as for the multilayer bottle product of patent document 1, what has an internal pressure with which the container main body is closed by the screw cap is originally required to remove the screw cap after discharging the whole content completely. However, the screw cap may be removed when the internal pressure remains accidentally. In that case, as the screw is loosened, the seal is released, and the jet starts with the screw being screwed. Therefore, even if the screw cap is accidentally removed, there is an advantage that the screw cap can be prevented from coming off.

  However, when the screw cap is loosened, not only the gas but also the remaining undiluted solution may be discharged together, in which case the undiluted solution may splash around and contaminate it. The aerosol products of Patent Document 2 and Patent Document 3 have similar problems.

  Then, this invention aims at provision of the discharge container which can suppress the scattering to the circumference | surroundings of the content, even when it is going to remove a screw cap in the state in which internal pressure remains.

  In order to solve the above-mentioned subject, discharge container of this application was provided with container main parts 11 and 22 for filling undiluted solution C and pressurization agent P, and valve assemblies 12 and 25 attached to the container main parts 11 and 22. O-ring holding portion which holds the O-ring 13 at the outer periphery of the neck portion 11d of the container body 11, 22 and below the male screw 11f and the male screw 11f in the discharge containers 10, 10A, 10B, 40, 50 11 g are formed, the valve assembly 12, 25 comprising a valve mechanism 14 and a screw cap 15 for attaching the valve mechanism 14 to the container body 11, 22, the screw cap 15 being a container body 11, A female screw 15e screwed with the 22 male screw 11f, and a seal surface 1 for pressing the O ring 13 held by the O ring holding portion 11g in the horizontal direction f has a cylindrical portion 15a which is formed, around the neck portion 11d, wherein the cylindrical shielding wall 15d which partitions the annular space below the cylindrical portion 15a is provided.

  The container main bodies 11 and 22 are double bottles consisting of an outer bottle 23 and an inner bottle 24, and the space between the outer bottle 23 and the inner bottle 24 and the male screw 11f and the female screw 15e are screwed together It is preferable that the threaded portion and the threaded portion communicate with each other.

  A holder 42 for containing a gas container 44 for internal pressure adjustment is provided inside the container body 11, and the stock solution C in the container body 11 is supplied to the valve mechanism 14 by attaching the valve assembly 12 to the container body 11. Preferably, a stock solution passage is formed.

  It is preferable that the shielding wall 15 d extend downward from the lower end of the cylindrical portion 15 a of the screw cap 15.

  A bottom cap 52 attachable to the screw cap 15 is detachably provided at the bottom of the container body 11, 22, and the bottom cap 52 has an outer diameter larger than the outer diameter of the screw cap 15. 54 and the inner cylindrical portion 53 fitted rotatably together with the screw cap 15, and when the bottom cap 52 is fitted to the screw cap 15 in the reverse state, the lower portion of the outer cylindrical portion 54 is the shielding wall It may be

  An outwardly extending flange 11j is provided below the O-ring holding portion 11g on the outer periphery of the neck 24d, and a gap G is provided between the outer peripheral surface of the flange 11j and the inner peripheral surface of the shielding wall 15d. Is preferred.

  In that case, it is preferable that the length L1 between the lower end of the shielding wall 15d and the lower end of the flange 11j be longer than the length L2 between the O ring 13 and the lower end of the cylindrical portion 15a.

  In the discharge container of the present invention, since the cylindrical shielding wall which divides the annular space below the cylindrical portion is provided around the neck portion, the screw cap is loosened and the lower end of the sealing surface is raised to O Even if it is removed from the ring, the pressurizing agent and the stock solution spouted from the gap are blocked by the shielding wall and flow downward. Therefore, scattering of the pressurizing agent and the stock solution to the surroundings is suppressed.

  The container body is a double bottle consisting of an outer bottle and an inner bottle, and a space between the outer bottle and the inner bottle is in communication with a screw portion in which the male screw and the female screw are screwed. In this case, even if the stock solution intrudes into the screw portion, the shield wall can suppress scattering of the stock solution to the periphery. Therefore, the space can be filled with the undiluted solution, and the space can also be filled with a pressurizing agent, and the degree of freedom is high. That is, when the space is filled with the undiluted solution, the undiluted solution always easily intrudes into the screw portion, but scattering is prevented by the shielding wall. In addition, even when the space is filled with the pressurizing agent, if the inner bottle and the outer bottle communicate with each other before the seal of the O-ring is released when the screw cap is loosened, the undiluted solution of the inner bottle intrudes into the threaded portion There are cases where the shielding wall prevents splashing.

  A holder is provided inside the container body to accommodate a gas container for internal pressure adjustment, and by attaching the valve assembly to the container body, a stock solution passage for supplying the stock solution in the container body to the valve mechanism is formed Since the pressurizing agent is replenished in the container body and has a constant pressure even if the undiluted solution in the container body runs out, when the screw cap is loosened, it enters the screw from the undiluted solution passage Undiluted solution spouts. However, in this case as well, the shielding wall blocks the splashing of the pressurizing agent and the stock solution to the surroundings, and does not contaminate the surroundings.

  If the shielding wall extends below the lower end of the cylindrical portion of the screw cap, the shielding wall can be realized with a simple configuration, and the operation is easy.

  At the bottom of the container body, a bottom cap attachable to a screw cap is detachably provided, and the bottom cap can co-rotate with the outer cylindrical portion having an outer diameter larger than the outer diameter of the screw cap When the bottom of the outer cylinder becomes the shielding wall when the bottom cap is fitted to the screw cap in the reverse state, the screw cap is fixed by the bottom cap having a large diameter. Easy to turn. Furthermore, since it is easy to widen the space surrounded by the shielding wall, it is possible to further suppress scattering of the stock solution and the like.

  An outwardly extending flange is provided below the O-ring holding portion on the outer periphery of the opening, and if a gap is provided between the outer peripheral surface of the flange and the inner peripheral surface of the shielding wall, Since the pressurizing agent can be discharged downward from the gap between the shielding wall and the flange, scattering can be further suppressed. In this case, if the length between the lower end of the shielding wall and the lower end of the flange is longer than the length between the ring and the lower end of the cylinder, the contact between the O ring and the seal surface is released and the seal is released. Also, since the shielding wall surrounds the flange, spattering can be further suppressed.

FIG. 1A is a cross-sectional view of a discharge container according to an embodiment of the present invention, and FIG. 1B is an enlarged view of the vicinity of a screw. It is an enlarged view which shows a seal | sticker state and the state which loosens a screw cap and releases a seal | sticker. It is an important section sectional view showing the seal state of the discharge container concerning a different embodiment of the present invention, and a seal release state. It is a partially omitted sectional view of a discharge container concerning a different embodiment of the present invention. FIG. 6 is a cross-sectional view of a discharge container according to another embodiment of the present invention. FIG. 6A is a cross-sectional view of a discharge container according to still another embodiment of the present invention, and FIG. 6B is a cross-sectional view showing the discharge container after discharge of the stock solution.

  Next, an embodiment of the discharge container of the present invention will be described in detail based on the drawings. The discharge container 10 shown in FIG. 1A, FIG. 1B and FIG. 2 has O that seals between the container body 11, the valve assembly 12 attached to the opening 11e of the container body 11, the container body 11 and the valve assembly 12. It consists of a ring 13.

  The container main body 11 is formed by blow molding or the like from a synthetic resin (thermoplastic resin) such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyamide (PA), etc. It comprises a portion 11b, a shoulder 11c and a cylindrical neck 11d. The vicinity of the upper end of the neck portion 11 d is the above-mentioned mouth portion 11 e. The top surface of the mouth 11 e is flat, and the inner circumferential surface is a smooth cylindrical surface. On the outer peripheral surface of the neck portion 11d, a male screw 11f formed of a helical ridge is formed. Below the male screw 11f, an O ring holding portion 11g for holding the O ring 13 is formed.

  The O-ring holding portion 11g is an angular groove (O-ring groove) continuous in the circumferential direction, and a bottom surface 11h (vertical surface) parallel to a sealing surface 15f of a screw cap 15 described later and two side walls 11i parallel to each other 11i (horizontal surface) (see FIG. 1B). A flange 11j extends outward in the horizontal direction below the O-ring holding portion 11g. The flange 11 j is used, for example, when the container body 11 is suspended at the time of content filling process or transportation. It does not have to be (see FIG. 3).

  The valve assembly 12 comprises a valve mechanism 14 and a screw cap 15. The valve mechanism 14 comprises a valve housing 16, a stem 17 accommodated vertically movably therein, an elastic body 18 urging the stem 17 upward, and a stem rubber 19 opening and closing the stem hole 17 a. The valve housing 16 is substantially cup-shaped and is open at its upper end. And the stem 17 and the elastic body 18 are accommodated inside from this opening. Further, the diameter of the vicinity of the upper end of the valve housing 16 is expanded to support the ring-shaped stem rubber 19. In addition, a hole is formed in the bottom surface and is in communication with the inside of the container body 11. A dip tube 20 is connected to the lower end of the valve housing 16.

  The screw cap 15 is formed by molding a synthetic resin (thermoplastic resin) such as polypropylene (PP) or polyacetal (POM), and the cylindrical portion 15a covers the outer periphery of the opening 11e and the neck 11d of the container body 11; A substantially cup-shaped valve holding portion 15b for holding the valve mechanism 14, a ring portion 15c connecting the upper end of the cylindrical portion 15a and the lower end of the valve holding portion 15b, and extending downward from the lower end of the cylindrical portion 15a It consists of the cylindrical shielding wall 15d whose internal diameter is larger than the diameter of outer periphery. On the inner surface of the cylindrical portion 15a, a female screw 15e formed of a helical ridge is formed. The female screw 15e corresponds to the male screw 11f on the outer periphery of the neck portion 11e.

  Below the female screw 15e, a sealing surface 15f which is parallel to and perpendicular to the bottom surface 11h of the O-ring holding portion 11g is provided. The O-ring 13 is horizontally pressed by the sealing surface 15 f to seal between the screw cap 15 and the neck 11 d of the container body 11. As described above, when the sealing surface 15 f is formed of a vertical surface (a smooth surface without a step), the O-ring 13 is not twisted when the screw cap 15 is screwed to the container main body 11. An engagement protrusion 15g for locking the valve housing 16 is provided on the inner peripheral surface of the valve holding portion 15b. Further, an opening for projecting the stem 17 to the outside is provided at the center of the upper surface of the valve holding portion 15b.

  As shown in FIG. 2, the shielding wall 15d has a cylindrical shape having an inner diameter D2 larger than the diameter D1 of the flange 11j. The shielding wall 15d is continuous with the cylindrical portion 15a via a step extending radially outward from the lower end of the cylindrical portion 15a. Thus, an annular space S having a substantially rectangular or trapezoidal cross section surrounded by the outer peripheral surface of the neck portion 11a, the lower surface of the stepped portion, the inner surface of the shielding wall 15d and the upper surface of the flange 11j is formed. The gap G between the outer peripheral surface of the flange 11 j and the inner surface of the shielding wall 15 d is relatively narrow, about 0.3 to 2 mm. Therefore, the flow path formed by the gap G is downward. However, since the gap G is formed all around, the flow passage area is wide, and the flow rates of the stock solution and the pressurizing agent are low. In addition, the shielding wall 15d extends downward beyond the flange 11j.

  As shown in FIG. 2, the length L1 of the shielding wall 15d projecting from the lower surface of the flange 11j is longer than the length L2 from the lower end of the cylindrical portion 15a (the lower end of the sealing surface 15f) to the O-ring 13. Therefore, even when the screw cap 15 ascends, the step moves upward from the O-ring 13, and the seal between the seal surface 15f and the O-ring 13 is released, the lower portion of the shielding wall 15d faces the periphery of the flange 11j. The length of the condition is maintained or longer. Therefore, the undiluted solution and pressurizing agent coming out of the gap G downward do not splash around. Further, when the seal is released, the annular space S becomes large, and functions as a buffer zone for releasing the momentum of the jet. First, the step of the shielding wall 15d abuts on the flange 11j, and when there is almost no space, the space S is generated by the rising of the shielding wall 15d. When the cap 15 is raised somewhat, the undiluted solution C and the pressurizing agent P coming out of the gap between the sealing surface 15f and the O-ring 13 are blocked by the shielding wall 15d and the radial outward flow is not scattered around.

  The stock solution C and the pressurizing agent P are filled in the discharge container 1 configured as described above, and the discharge member 21 is attached to the valve assembly 12 to form a discharge product. The stock solution C is not particularly limited as long as it is a fluid. It may be a low viscosity liquid or a high viscosity fluid such as cream or gel. As the undiluted solution, liquid for space spray such as fragrance, deodorant and insect repellent, daily agent such as shampoo, rinse and shaving, antiperspirant, skin lotion, astringent, moisturizer, skin care such as sunscreen And hair care such as hair spray, hair cream and hair oil, anti-inflammatory analgesics, medicinal solutions such as anti-itch, food products such as olive oil.

  The pressurizing agent P may, for example, be a compressed gas such as nitrogen, compressed air, carbon dioxide gas or nitrous oxide, or a liquefied gas such as liquefied petroleum gas, dimethyl ether or hydrofluoroolefin. The pressure after filling is, for example, about 0.3 to 1.0 MPa at 25 ° C. The pressurizing agent P can be loaded from the stem 17.

  The discharge member 21 is a so-called push button, and a mounting portion 21a for mounting on the stem 17, a spray mechanism 21b for discharging the contents in the form of a mist, and a communication passage 21c continuing from the mounting portion 21a to the spray mechanism 21b. And have. When the discharge member (push button) 21 is pushed down, the stem 17 is pushed down, the stem hole 17a closed by the stem rubber 19 is opened, and the contents (stock solution C and pressurizing agent P) from inside the container body 11 It is discharged to the outside via the valve mechanism 14 and the discharge member 21. In addition, as the discharge member 21, it can replace with a well-known thing suitably according to the content. For example, the spray mechanism 21b may not be provided.

  After the entire content has been discharged, the user rotates the screw cap 15 to remove it from the container body 11. This makes it easy to separate and dispose, and can be safely recycled without residual pressure. Even when the undiluted solution in the container body 11 seems to be exhausted, the discharge container 10 is transported and stored in an inverted state, and the external screw 11 f of the container body 1 and the screw cap 15 are shaken by the consumer. Some undiluted solution C may remain between female screws 15e of. In that case, when the screw cap 15 is removed, particularly at the moment when the seal surface 15f is removed from the O-ring 13 as shown in FIG. 2, the contents spout from a slight gap between the O ring 13 and the lower end of the cylindrical portion 15a. However, since there is a space S that exhibits the above-mentioned buffer function, the contents do not immediately go out but are discharged into the space S and then flow out through the gap G between the flange 11j and the sealing surface 15f.

  Since the gap G is annular as described above and the flow passage area is wide, the flow velocity is low. Therefore, scattering to the surroundings is suppressed. When the shielding wall 15d is long and continues below the flange 11j when the seal is released, the contents coming out of the annular gap G flow downward along the shielding wall 15d and are scattered around the periphery. Is further suppressed. Then, after the ejection of the contents ends to a certain extent and the internal pressure almost disappears, even if the shielding wall 15d becomes higher than the flange 11j, the contents slowly flow out, so the scattering of the contents is suppressed. Thereafter, the screw cap 15 can be removed from the container main body 11, and the container main body 11 made of a synthetic resin material or the like can be recovered for recycling.

  The aforementioned container body 11 is provided with a flange 11j below the male screw 11f, and the shielding wall 15d is sized to surround the outer periphery of the flange 11j. On the other hand, in the case of the container main body 10A which does not have a flange as shown in FIG. 3, the shielding wall 15d may have a small diameter. For example, after the sealing surface 15 f is separated from the O-ring 13, a gap may be formed between the shielding wall 15 d and the O-ring 13 so that the contents may be removed. Therefore, the sealing surface 15f and the shielding wall 15d can be continued at a low level difference. In addition to the step-like step, it may be an inclined surface as shown by an imaginary line.

  The discharge container 10B shown in FIG. 4 has a container body 22 as a double bottle. In the discharge container 10 of FIGS. 1A and 1B, the undiluted solution and the pressurizing agent are filled in the container body 11 together, but in the discharge container 10B of FIG. 4, the container body 22 is filled with the pressurizing agent P. A double bottle is formed of an inner bottle 24 and an outer bottle 23 in which a space between the inner bottle 24 is filled with the stock solution C. The outer bottle 23 is a screw cap 15 having an O-ring 13 disposed around the neck 11 d, in addition to the hemispherical bottom 11 a, having an external thread 11 f for screwing the screw cap 15 around the neck 11 d. The same reference numerals as in the case of the container body 11 of the discharge container 10 of the above embodiment, for example, the point of sealing between the sealing surface 15f and the point of providing a shielding wall 15d at the lower end of the screw cap 15 The specific description is omitted.

  The inner bottle 24 is formed, for example, by blow molding from a synthetic resin (thermoplastic resin) such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyamide (PA), etc. 24a, body 24b, shoulder 24c and cylindrical neck 24d. A mouth 24 e is provided near the upper end of the neck 24 d of the inner bottle 24. The inner peripheral surface of the opening 24e is a smooth cylindrical surface. The mouth 24 e has a flange 24 f extending outward in the radial direction. And the top surface of the inner bottle 24 is comprised by the upper surface of the opening 24e containing the flange part 24f. This top surface is flat.

  The flange portion 24 f is engaged with the top surface of the opening 11 e of the outer bottle 23. A longitudinal groove 24g is formed from the lower surface of the flange 24f to the outer periphery of the neck 24d. The groove portion 24g fills the undiluted solution C between the outer bottle 23 and the inner bottle 24 and is used as a flow path for discharging the undiluted solution from the space. The inner bottle 24 configured as described above has flexibility or crushability.

  The inner bottle 24 can be formed into the same shape as the inner surface of the outer bottle 23 by blow molding with the outer bottle 23 or by blow molding the inner surface of the outer bottle 23 formed in advance as a mold. The inner bottle 24 is in close contact with the inner surface of the outer bottle 23 in a natural state, and is separated from the outer bottle 23 as shown in FIG. 4 when the stock solution is injected. Then, as the stock solution C is discharged from the valve, the pressure spreads to the inner surface of the outer bottle 23 by the pressure of the pressurizing agent P.

  The stock solution C is discharged from the discharge member 21 to the outside through the groove 24g of the inner bottle 24, the inner peripheral surface of the screw cap 15 and the flanges 24f and 29a, the groove 29b of the valve housing 29 and the outer stem 26a. . The inner bottle 24 gradually expands as the remaining amount of the stock solution C decreases, and finally abuts on the inner surface of the outer bottle 23.

  In the discharge container 10B, in order to prevent leakage of the pressurizing agent P filled in the inner bottle 24, the top surface of the inner bottle 24 (upper surface of the opening 24e of the inner bottle 24) and the flange portion 29a of the valve housing 29 A flat, ring-shaped sealing material 32 is interposed between the lower surface and the plate. The sealing material 32 is vertically compressed between the top surface of the inner bottle 24 and the flange portion 29a by screwing the screw cap 15 with the male screw 11f of the outer bottle 23, and the inner bottle 24 and the valve mechanism It seals between 14 (valve housing 29). On the other hand, the space between the outer bottle 23 and the screw cap 15 is only sealed by the O-ring 13, and the upper side of the O-ring 13, that is, the range of the screw portion in which the male screw 11f and the female screw 15e are screwed together. Is in unsealed communication with the space between the outer bottle 23 filled with the stock solution C and the inner bottle 24. Therefore, even after the undiluted solution enters the area of the screw and discharges the contents, the undiluted solution may remain in the area of the screw or the like.

  In the valve assembly 25, the valve mechanism 14 corresponds to a double bottle. Specifically, in order to separately charge the pressurizing agent P and the stock solution C, the stem 26 has an outer stem 26 a communicating with the inside of the outer bottle 23 and a double stem having an inner stem 26 b communicating with the inside of the inner bottle 24. And two stem rubbers 27, 28 corresponding to each stem 26a, 26b. The discharge member 21A blocks the upper end opening of the outer stem 26a in order to prevent the pressurizing agent P from being discharged while discharging the stock solution C.

  The valve housing 29 is provided with a flange portion 29 a and is engaged with the top surface of the opening 24 e of the inner bottle 24. A groove 29b is formed on the upper surface of the flange 29a. The groove 29 b is used as a filling passage for filling the stock solution C between the outer bottle 23 and the inner bottle 24 and a discharge passage for discharging the stock solution C.

  In the discharge container 10B configured as described above, the valve assembly 25 is attached to the outer bottle 23 by screwing the female screw 15e of the screw cap 15 to the male screw 11f of the outer bottle 23. A shielding wall 15 d is provided at the lower end of the screw cap 15. Therefore, as described above, when the screw cap 15 is rotated and removed from the container body (outer bottle) 22, splashing the stock solution C around is suppressed.

  The discharge container 10B can also be filled with the stock solution C in the inner bottle 24 and the pressurizing agent P in the space between the outer bottle 23 and the inner bottle 24. In this case, the undiluted solution C does not intrude into the screw portion in a normal use condition, but when the screw cap 15 is loosened, the compression of the seal material 32 is weakened before the seal of the O ring 13 is released. There is a possibility that the liquid solution C in the inner bottle 24 may intrude into the screw portion, but there is a risk that spattering is prevented by the shielding wall 15d.

  The discharge container 40 shown in FIG. 5 includes a pressure adjustment mechanism 41 that automatically increases the internal pressure to maintain a constant pressure when the pressure inside the container body 11 decreases. The pressure adjusting mechanism 41 includes a cylinder (holder) 42 provided below the valve assembly 12, a piston 43 accommodated inside the cylinder 42, and a gas container 44 disposed upside down on the piston 43. Become. The gas container 44 is filled with compressed gas or liquefied gas which is the pressurizing agent P. A communication hole 42 a communicating with the inside of the container body 11 is provided on the side wall of the cylinder 42. The lower portion of the cylinder 42 is a pressure control chamber S1 airtightly closed by a piston 43. A flange 42 b is provided on the outer periphery of the upper end of the cylinder 42 to close the opening of the container body 11. The flange 42b is formed with a through hole 42c penetrating vertically, and the upper end of the dip tube 20 is attached to the through hole 42c.

  The valve assembly 12 comprises a valve mechanism 14 and a screw cap 15 for removably attaching the valve mechanism 14 to the container body 11. The valve mechanism 14 has a valve housing 16, a stem 26, a stem rubber 27, and an elastic body 18. A communication hole 16a communicating with the inside of the container main body 11 is formed on the side surface of the valve housing 16, and an annular locking flange 16b attached to the flange 42b of the cylinder 42 via a sealing material 42d is provided There is. Grooves 42e and 16c serving as passages for discharging the stock solution C are respectively formed on the upper surface of the flange 42b and the upper surface of the locking flange 16b.

  In the discharge container 40, the male screw 11f and the O-ring holding portion 11g provided on the neck portion 11d, and the female screw 15e and the shielding wall 15d provided on the screw cap 15 are substantially the same as those of the discharge container 10 of FIG. is there.

In the discharge container 40, the flange 42b of the cylinder 42 (holder) accommodating the gas container 44 is placed on the opening 11e of the container main body 11, and the valve assembly 12 is attached to the container main body 11. While moving to compress the pressure adjustment chamber S1, the push button 44a attached to the valve of the gas container 44 is pressed by the piston 43 to inject gas, and the container body 11 is filled with the pressurizing agent P. . When the pressure in the container body 11 increases and the pressure to depress the piston 43 becomes stronger than the pressure to increase the pressure of the pressure adjustment force S1, the piston lowers and the valve of the gas container 44 is closed to inject the gas. Stop. Note that by attaching the valve assembly 12 to the container body 11, the stock solution from inside the container body 11 reaches the inside of the housing 16 of the valve mechanism 14 via the dip tube 20, the through hole 42c, the groove 42e, the groove 16c, and the communication hole 16a. A passage is formed. No seal material is provided between the stock solution passage and the screw portion, and the stock solution passage is in communication with the screw portion.

  Since the discharge container 40 has the pressure adjustment mechanism 41, for example, when the stock solution C is jetted to reduce its volume and the internal pressure decreases, the gas as the pressurizing agent P is released from the gas container 44 of the pressure adjustment mechanism 41. And the internal pressure recovers. When the remaining amount of gas in the gas container 44 decreases, the internal pressure decreases, and the injection of the stock solution C becomes insufficient. In that case, the screw cap 15 can be removed and the gas container 44 can be replaced. Thus, the remaining undiluted solution C can be discharged to the end. Further, when the stock solution C is exhausted, the screw cap 15 can be removed and the stock solution C can be filled. These actions are known in FIG. 12 of Patent Document 2 and the like, and thus detailed description will be omitted.

  As described above, when removing the screw cap 15 by replacing the gas container 44 or removing the undiluted solution C, etc., remove the screw cap 15 in a state in which the internal pressure remains, so the screw portion where the male screw 11f and the female screw 15e are screwed together The undiluted solution C remaining in the container spouts out together with the pressurizing agent P. However, as in the case of FIG. 1 b, the flow of the stock solution C and the pressurizing agent P is restricted downward by the shielding wall 15 d and the flow velocity becomes gentle, so that the stock solution C and the pressurizing agent P are prevented from scattering around Be done.

  In the discharge container 50 shown in FIG. 6A, the container body 22 is a double bottle of the outer container 23 and the inner container 24 as in the discharge container 10B of FIG. The bottom 11a of the outer container 23 is hemispherical, and a cylindrical bottom cap 52 for stably mounting the container body 11 is fitted to the bottom 11a. Unlike the above-described discharge container, the discharge container 50 does not have a shielding wall in the screw cap 15, and a part of the bottom cap 52 is used as a shielding wall. The bottom cap 52 connects the lower end of the inner cylindrical portion 53 which can be attached to the outer surface of the screw cap 15 in an inverted state, the outer cylindrical portion 54 provided with a space around the inner cylindrical portion 53, and lower ends thereof. And an annular bottom plate 55.

  The upper end of the outer cylindrical portion 54 is made higher than the upper end of the inner cylindrical portion 53, and when turned up and mounted on the screw cap 15, the raised portion becomes the shielding wall 56. At the lower end of the inner cylindrical portion 52, an inner flange 57 extending inward is provided. The inner flange 57 is a portion that abuts against the top surface of the screw cap 15 when the bottom cap 52 is inverted and mounted on the screw cap 15 as shown in FIG. 6B.

  In this embodiment, an engagement groove 58 extending in the longitudinal direction is further provided on the outer peripheral surface of the screw cap 15, and the inner peripheral surface of the inner cylindrical portion 53 of the bottom cap 52 engages with the engagement groove 58. The protrusions 59 are formed. Then, when the bottom cap 52 is attached to the screw cap 15, when the engagement protrusion 59 is engaged with the engagement groove 58, the bottom cap 52 can be turned to transmit the rotational force to the screw cap 15. Since the screw cap 15 can be turned by turning the bottom cap 52 having a large outer diameter in this manner, the screw cap 15 can be easily removed from the container main body 61. When the screw cap 15 is removed, the shielding wall 56 prevents spattering of the stock solution.

  As mentioned above, although typical embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to change variously within the scope of this invention, and to carry out. For example, in the above embodiment, although the screw cap and the container body are both made of synthetic resin, they may be made of metal such as aluminum or tinplate. Moreover, although the undiluted | stock solution is one type also in any embodiment, you may discharge 2 types of undiluted | stock solutions together. Moreover, although the discharge container 50 of FIG. 6A and FIG. 6B is a double container, it can also be set as the single layer container similar to FIG. 1A. Furthermore, in the discharge container 50, an engagement groove may be formed on the inner circumferential surface of the inner cylindrical portion 53, and an engagement protrusion may be provided on the outer circumferential surface of the outer cylindrical portion 54 of the screw cap 15.

Reference Signs List 10, 10A, 10B Discharge container 11, 22 Container body 11a Bottom 11b Body 11c Shoulder 11d Neck 11e Opening 11f Male thread 11g O ring holding portion 11h Bottom surface 11i Side wall 11j Flange 12 Valve assembly 13 O ring 14 Valve mechanism 15 Screw Cap 15a Cylindrical portion 15b Valve holding portion 15c Ring portion 15d Shielding wall 15e Female screw 15f Sealed surface 15g Engaging projection 16, 29 Valve housing 16a Communication hole 16b Locking flange 16c Groove 17 Stem 17a Stem hole 18 Elastic body 19 Stem rubber 20 Dip tube 21, 21A Discharge member (push button)
21a mounting portion 21b spraying mechanism 21c communication passage C undiluted solution P pressurizing agent D1 diameter of flange D2 inner diameter S of shielding wall annular space G gap L1 length of shielding wall protruding from lower surface of flange L2 from lower end of cylinder portion to O ring Length 23 Outer bottle 24 Inner bottle 24a Bottom 24b Body 24c Shoulder 24d Neck 24e Opening 24f Flange 24g Groove 25 Valve assembly 26 Stem 26a Outer stem 26b Inner stem 27, 28 Stem rubber 29 Valve housing 29a Flange 29b Groove part 29c Tube part 32 Sealing material 40 Discharge container 41 Pressure adjustment mechanism 42 Cylinder 42a Communication hole 42b Flange 42c Through hole 42d Sealing material 42e Groove 43 Piston 44 Gas container 44a Push button S1 Pressure adjustment chamber 50 Discharge container 52 Bottom cap 52b Groove 53 Inner cylinder 54 Cylindrical portion 55 bottom plate 56 shielding wall 57 inner flange 58 engaging groove 59 engaging projection

Claims (7)

A discharge container comprising a container body for filling a stock solution and a pressurizing agent, and a valve assembly attached to the container body,
A male screw and an O-ring holder for holding an O-ring below the male screw are formed on the outer periphery of the neck portion of the container body.
The valve assembly comprises a valve mechanism and a screw cap for attaching the valve mechanism to the container body;
The screw cap is provided with a female screw screwed with the male screw of the container body, and a cylindrical portion having a sealing surface for pressing the O ring held by the O ring holding portion in the horizontal direction Yes,
A cylindrical shielding wall is provided around the neck portion to define an annular space below the cylindrical portion.
Discharge container. The container body is a double bottle consisting of an outer bottle and an inner bottle, and a space between the outer bottle and the inner bottle is in communication with a screw portion in which the male screw and the female screw are screwed. The discharge container according to claim 1. A holder for containing a gas container for internal pressure adjustment is provided inside the container body, and by attaching the valve assembly to the container body, a stock solution passage for supplying the stock solution in the container body to the valve mechanism is formed. The discharge container according to claim 1 or 2. The discharge container according to any one of claims 1 to 3, wherein the shielding wall extends downward from the lower end of the cylindrical portion of the screw cap. A bottom cap attachable to a screw cap is detachably provided at the bottom of the container body,
The bottom cap has an outer cylindrical portion having an outer diameter larger than the outer diameter of the screw cap, and an inner cylindrical portion fitted rotatably with the screw cap;
The discharge container according to any one of claims 1 to 3, wherein a lower portion of the outer cylindrical portion is the shielding wall when the bottom cap is fitted to the screw cap in an inverted state. An outwardly extending flange is provided below the O-ring holder on the outer periphery of the neck,
The discharge container according to any one of claims 1 to 5, wherein a gap is provided between the outer peripheral surface of the flange and the inner peripheral surface of the shielding wall. The discharge container according to claim 6, wherein the length between the lower end of the shielding wall and the lower end of the flange is longer than the length between the O-ring and the lower end of the cylindrical portion.

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